Deck 4: Computer Networks

Question 1

With a _____ network connection, the computers and other devices on the network are physically connected via cabling to the network.

A)radionic
B)wired
C)shortwave
D)cellular

Answer 1

B

Question 2

Which of the following statements is true of videoconferencing?

A)It conducts real-time, face-to-face meetings between individuals physically located in different places.
B)It does not require Internet connection to connect to other users.
C)It uses less bandwidth than audio conferencing and hence always provides video clips with high quality.
D)It allows participants to attend a meeting even if the hardware breaks down.

Answer 2

A

Question 3

Conventional television and radio networks, cellular telephone networks, and satellite TV networks are examples of _____.

A)bounded networks
B)reinforced networks
C)wired networks
D)wireless networks

Answer 3

D

Question 4

The amount of data that is actually transferred under real-life conditions is called cardinality .

Question 5

In fiber-optic cables, single fiber strands are used for full-duplex data transmissions.

Question 6

A computer network is a collection of _____.

A)programs that perform tasks that users are directly interested in, which includes operating systems and any program that supports application software
B)systems and other hardware devices that are connected so users can share hardware, software, and data as well as communicate with each other electronically
C)documents called Web pages available through the Internet
D)related fields in a data organization that can be stored, sorted, and queried

Question 7

A public Internet access point at an airport or a coffeehouse is known as a piconet.

Question 8

Individual Bluetooth networks are called piconets.

Question 9

The current standards for cellular networks today in the United States is 5G.

Question 10

Which of the following statements is true of the global positioning system (GPS) ?

A)It is used in determining exact geographic locations.
B)It uses satellite technology to schedule meetings with clients.
C)It is used to avail work from home facilities.
D)It provides medical information and services worldwide.

Question 11

A single server can act as a network server, a file server, a print server, and/or a mail server or Web server.

Question 12

The term modem is often used interchangeably with network adapter when describing devices used to obtain Internet access via certain networks.

Question 13

Identify how wireless networks differ from wired networks.

A)Unlike wired networks, wireless networks tend to be faster and more secure.
B)Unlike wired networks, wireless networks allow easy connections in locations where physical wiring is impractical.
C)Unlike wired networks, wireless networks can be accessed only when they are connected to the home network.
D)Unlike wired networks, wireless networks physically connect the computers and other devices on the network.

Question 14

Video data requires the most amount of bandwidth when compared to text data.

Question 15

Bridges for a wireless network are often called range extenders.

Question 16

Twisted-pair cabling can be used with both analog and digital data transmission.

Question 17

WiMAX is also referred to as 802.11a.

Question 18

Latency is the amount of data that can be transferred in a given time period, such as via a bus or over a certain type of networking medium.

Question 19

Communication that takes place through a telephone is an example of simplex transmission.

Question 20

In a client-server network, network clients  provide access to software, files, and other resources that are being shared via the network.

Question 21

Fast Ethernet has a maximum speed of _____.

A)10 Gbps
B)400 Gbps
C)100 Mbps
D)40 Mbps

Question 22

Jenny, a new accountant at Sroha Networks, wants to transfer official data from a colleague's hard drive to her laptop. She wants to exchange the data directly between the two systems via the Internet. Which of the following types of networks should Jenny use to perform the data transfer without asking the colleague to place the data on a Web server for her to view?

A)Internet n-tier computing
B)Internet peer-to-peer computing
C)Internet cloud-based computing
D)Internet client-server computing

Question 23

The main disadvantage of fiber-optic cabling is _____.

A)its slow speed when used to connect networks housed in separate buildings
B)its susceptibility to interference
C)the use of metallic fiber strands instead of glass or plastic fiber strands
D)the initial expense of both the cable and the installation

Question 24

In the accompanying figure, data is represented as _____.

A)digital signals
B)analog signals
C)ramp signals
D)parabolic signals

Question 25

Identify the correct order in which the boxes in the accompanying figure should be placed to show how TCP/IP works.

A)Box 2, Box 3, Box 1, and Box 4
B)Box 1, Box 3, Box 2, and Box 4
C)Box 4, Box 1, Box 2, and Box 3
D)Box 3, Box 4, Box 2, and Box 1

Question 26

Linda is training to become a certified network design expert and consultant. While researching about the process of cellular radio transmissions, Linda learns that when a cell phone user begins to make a call, it is picked up by the cell tower located in the cell in which the cell phone is located and that belongs to the user's wireless provider. Which of the following is the next step in this process?

A)The cell tower requests the cell phone user to stay in the current location until the recipient answers the call.
B)The cell tower forwards the call to the wireless provider's Mobile Telephone Switching Office.
C)The cell tower combines service areas into overlapping bevel-shaped zones called frames.
D)The cell tower routes the call to the sender's telephone via his or her mobile or conventional telephone service provider.

Question 27

The amount of data that is actually transferred under real-life conditions is called _____.

A)interplay data
B)jitter
C)latency
D)throughput

Question 28

Identify a protocol that is used to retrieve emails.

A)Simple Mail Transfer Protocol (SMTP)
B)Address Resolution Protocol (ARP)
C)File Transfer Protocol (FTP)
D)Post Office Protocol (POP3)

Question 29

The accompanying figure represents _____.

A)asynchronous transmission
B)anachronous transmission
C)isochronous transmission
D)synchronous transmission

Question 30

Which of the following statements is true of the Transmission Control Protocol (TCP)?

A)It is used in broadcast and multicast connections.
B)It is responsible for the delivery of data.
C)It does not allow users to create block boundaries.
D)It is faster than the User Data Protocol (UDP).

Question 31

In the accompanying figure, data is represented as _____.

A)digital signals
B)sinusoidal signals
C)ramp signals
D)analog signals

Question 32

Most networking media send data using _____ in which data is represented by only two discrete states: 0s and 1s.

A)digital signals
B)contiguous signals
C)ramp signals
D)exponential signals

Question 33

Rony works on several confidential files for his company. Ignoring the privacy requirements, Rony places the files in a shared folder on his computer; hence, there is a risk of other people accessing the files. Which of the following steps should Rony take while using a peer-to-peer (P2P) network to prevent his original files from being overwritten by another P2P user?

A)He should designate all the files in the shared folder as execute-only.
B)He should designate all the files in the shared folder as author only by using the chown command.
C)He should designate all the files in the shared folder as client only by using the chgrp command.
D)He should designate all the files in the shared folder as read-only.

Question 34

Which of the following ranges of the electromagnetic spectrum is sometimes referred to as the wireless spectrum?

A)Radio frequency (RF)
B)Infrared (IR) transmission
C)Gamma ray
D)X-ray

Question 35

Which of the following is an advantage of Internet Protocol Version 6 (IPv6) and is not available in Internet Protocol Version 4 (IPv4)?

A)IPv6 addresses can be used for television and radio broadcasting.
B)In IPv6, the router always recalculates a checksum when header fields are altered, such as time to live (TTL) or hop limit.
C)IPv6 uses 32-bit addresses, which allows for 2³² possible unique addresses.
D)In IPv6, all devices in a home or business are accessible on the Internet directly by their own Internet Protocol (IP) address.

Question 36

Identify a method of data transmission used primarily with local area networks (LANs).

A)Packet switching
B)Circuit switching
C)Broadcasting
D)Clocking

Question 37

Laura, a network administrator, is in charge of setting up various networks for the IT department of a University. For a final year project, the students of the university seek Laura's help to set up a network with multiple connections between network devices. The students need to ensure that even if one device on the network fails or if the line of connection fails, the network should function, assuming an alternate path is available. Which of the following network topologies should Laura suggest in the given scenario?

A)Bus network
B)Mesh network
C)Counter area network
D)Star network

Question 38

Jerry sets up a small network consisting of his portable computer, mobile phone, and digital camera. Jerry designs the network such that these devices can communicate and share data whenever they get within a certain physical distance of each other. Which of the following networks has Jerry used in the given scenario?

A)Metropolitan area network (MAN)
B)Wide area network (WAN)
C)Local area network (LAN)
D)Personal area network (PAN)

Question 39

In the context of network topologies, which of the following is true of a star network?

A)It is a network that uses a central device through which all network transmissions are sent.
B)It is a network that uses a central cable to which all network devices connect.
C)The network contains multiple devices so that data can take any of several possible paths from source to destination.
D)The network continues to function even if the central device fails.

Question 40

Paul, the network administrator at Sheroko High School, sets up a local area network (LAN) within the school campus that features star topology. He uses Ethernet, which contains devices that use multiple Ethernet speeds. Which of the following will Paul observe in the network?

A)The slower devices continue to operate only at their respective speeds.
B)The connected devices function in the absence of an Ethernet port.
C)The expansion cards are removed automatically from the built-in modules of the Ethernet network.
D)The electrical power to be sent along with data over the cables in an Ethernet network is blocked.

Question 41

In a client-server network, a(n) _________ is a computer that is dedicated to processing client requests.

A)server
B)client
C)network
D)router

Question 42

Case 4-1
Michael, the owner of a new retail store, sets up a business network to communicate with fellow retailers and to attract customers.
Michael plans to indulge in various networking applications that can be used in his business. Which of the following networking technologies can he use to conduct meetings with retailers in other parts of the world?

A)Telemarketing
B)Host signaling
C)Peer-to-peer ( P2P ) networking
D)Videoconferencing

Question 43

Case 4-3
Akira is a freelance content writer and uses the Internet to research about the topics that she works on. She needs constant high-speed Internet connectivity to upload and download necessary information.
Akira observes that, off-late, her internet connection has slowed down to a great extent. Which of the following should Akira perform to fix this issue?

A)Replace the network interface card
B)Try power cycling the system's modem and router
C)Try connect to nearby hotspots or hotzones.
D)Replace the existing Ethernet cable and the modem with new ones

Question 44

Which of the following statements is true of a network adapter?

A)It prevents the conversion of signals from digital to analog, and vice versa.
B)It is built into a device as a bridged card.
C)It needs to support the type of cabling or signals being used.
D)It is independent of the type of Internet access being used.

Question 45

Case 4-1
Michael, the owner of a new retail store, sets up a business network to communicate with fellow retailers and to attract customers.
Michael wishes to connect all the computers in his office in such a way that if one device in the connection fails, the network can still function, assuming an alternate path is available. He also wants to ensure that data can take any of several possible paths from source to destination. Which of the following topologies should Michael use to connect the devices?

A)Star topology
B)Bus topology
C)Ring topology
D)Mesh topology

Question 46

Which of the following is one of the key enhancements of Bluetooth 4.0?

A)Large-range connectivity
B)Need of cables between devices for data transfer
C)Energy efficiency
D)Use of Wi-Fi signals

Question 47

Case 4-3
Akira is a freelance content writer and uses the Internet to research about the topics that she works on. She needs constant high-speed Internet connectivity to upload and download necessary information.
To facilitate communication between the devices on the network, Akira wants to use a wired network connection with the devices using networking cables . Here, Akira can use a(n) _____, which sends the data only to the intended device rather than sending it to all connected devices.

A)antenna
B)switch
C)extender
D)pipeline

Question 48

Case 4-2
Arnold takes his networking trainer Ron's help to learn about the array of new communications technologies that are being used today. Ron provides various instances and examples that can help Arnold identify different communication protocols and standards.
Ron explains to Arnold how the current standards for cellular networks today work in the United States and many other countries. Based on the explanation, which of the following should Arnold do when the 4G usage on his cell phone exceeds the set limit?

A)Not access Internet on his phone
B)Switch to 3G network instead of 4G
C)Share his device with another 4G-enabled device
D)Establish a secure connection with a nearby home network

Question 49

In the context of networking hardware, which of the following is true of wired networks that have a central device called a hub?

A)The network forwards the data only to the intended receiver.
B)The network breaks down the data at the sender's end and then reassembles it at the receiver's end.
C)The network is extremely efficient.
D)The bandwidth of the network is shared.

Question 50

Case 4-2
Arnold takes his networking trainer Ron's help to learn about the array of new communications technologies that are being used today. Ron provides various instances and examples that can help Arnold identify different communication protocols and standards.
Ron tells Arnold that many mobile WiMAX services have moved to cellular standards such as _____, which is the primary standard for 4G networks today.

A)Long Term Evolution (LTE)
B)Evolution Data Optimized (EV-DO)
C)High Speed Downlink Packet Access (HSDPA)
D)Universal Mobile Telecommunications System (UMTS)

Question 51

Case 4-2
Arnold takes his networking trainer Ron's help to learn about the array of new communications technologies that are being used today. Ron provides various instances and examples that can help Arnold identify different communication protocols and standards.
Ron tells Arnold that both the HomePNA Alliance and the HomeGrid Forum are promoting a technology as a unified worldwide standard. Which of the following standards is Ron talking about here?

A)G)hn
B)Universal Mobile Telecommunications System
C)Licensed-Assisted Access
D)Long Term Evolution

Question 52

In the accompanying figure of a HomePlug powerline network, _____ denotes that the router and PC are connected via the home's electrical wiring.

A)Box D
B)Box A
C)Box B
D)Box C

Question 53

Tina wants to control a water heater's operations through her smartphone. She connects the water heater to her smartphone for this purpose. Which of the following networking standards does Tina use to accomplish this?

A)Wi-Fi
B)WiBee
C)Internet Protocol (IP)
D)Transmission Control Protocol (TCP)

Question 54

Ashley wants to use wireless devices while working on her desktop computer. She buys a new wireless keyboard and a wireless mouse that are compatible with her existing computer system. Which of the following wireless standards should she use to connect the devices to her computer?

A)Bluetooth
B)WiBee
C)Ethernet
D)Token ring

Question 55

Case 4-1
Michael, the owner of a new retail store, sets up a business network to communicate with fellow retailers and to attract customers.
Michael wants to install a network that allows his employees to exchange files and email, share printers and other hardware, and access the Internet within his organization. Identify the network that Michael should use.

A)Personal area network (PAN)
B)Wide area network (WAN)
C)Metropolitan area network (MAN)
D)Local area network (LAN)

Question 56

Case 4-3
Akira is a freelance content writer and uses the Internet to research about the topics that she works on. She needs constant high-speed Internet connectivity to upload and download necessary information.
If Akira needs to connect the Internet to a local area network (LAN), she should use a(n) _____, which passes data on to the intended recipient only and plans a path through the network to ensure that the data reaches its destination in the most efficient manner possible.

A)router
B)hub
C)antenna
D)repeater

Question 57

Identify a true statement about piconets.

A)Each piconet can connect up to eight devices, for a maximum of 80 devices within any 10-meter radius.
B)Each piconet can connect up to eight devices, for a maximum of 100 devices only within a 5-meter radius.
C)Each piconet can connect up to eight devices, for a maximum of 120 devices within any 25-meter radius.
D)Each piconet can connect up to eight devices, for a maximum of 20 devices only within a 2-meter radius.

Question 58

With fixed WiMAX, it is feasible to provide coverage to an entire city or other geographical area by using _____.

A)multiple WiMAX towers and a single hotspot
B)a single WiMAX tower with overlapping hotzones
C)a single WiMAX tower with a single hotspot
D)multiple WiMAX towers and overlapping hotzones

Question 59

The accompanying figure demonstrates a(n) _____ form of networking standard.

A)Ethernet Controller Driver
B)Ethernet Ring Protection
C)Power over Ethernet
D)Power with Ethernet Evolution

Question 60

Which of the following statements is true of Wi-Fi (802.11)?

A)The speed of a Wi-Fi network is independent of the Wi-Fi standard being used.
B)Wi-Fi is designed for low-range data transfers-typically between 10 and 30 feet indoors and 30 to 90 feet outdoors.
C)The speed of a Wi-Fi network is independent of the number of solid objects between the access point and the computer or other device being used.
D)Wi-Fi is designed for medium-range data transfers-typically between 100 and 300 feet indoors and 300 to 900 feet outdoors.

Question 61

Briefly explain the different types of transmissions with respect to the direction in which transmitted data can move.

Question 62

One type of wireless networking that does not use signals in the radio frequency (RF) band of the electromagnetic spectrum is _________, which sends data as a form of rays over relatively short distances.

A)infrared (IR) transmission
B)cellular transmission
C)electromagnetic induction
D)heterojunction bipolar induction

Question 63

A(n) _________ is a networking cable that contains hundreds of thin, transparent filaments over which lasers transmit data as light.

A)fiber-optic cable
B)twisted-pair cable
C)coaxial cable
D)packet-switched cable

Question 64

In a virtual private network (VPN), a process called _________ is used to carry the data over the Internet; special encryption technology is used to protect the data so it cannot be understood if it is intercepted during transit.

A)tunneling
B)bridging
C)coupling
D)linking

Question 65

A(n) _________ is an Earth-based device that sends and receives microwave signals.

A)microwave station
B)microwave hub
C)microwave router
D)microwave kernel

Question 66

Briefly describe any of the five communications protocols.

Question 67

With a(n) _________, a central server is not used.

A)peer-to-peer network
B)server based network
C)client based network
D)client server network

Question 68

With _________, messages are separated into small units called packets.

A)packet switching
B)packet downturn
C)packet inflation
D)packet tunneling

Question 69

A(n) _________ is a network that covers a relatively small geographical area, such as a home, an office building, or a school.

A)local area network (LAN)
B)metropolitan area network (MAN)
C)personal area network (PAN)
D)wide area network (WAN)

Question 70

A(n) _________ is a private, secure path across a public network that is set up to allow authorized users private, secure access to a network.

A)virtual private network (VPN)
B)local private network (LPN)
C)managed private network (MPN)
D)web private network (WPN)

Question 71

A(n) _________ is an intranet that is at least partially accessible to authorized outsiders.

A)extranet
B)Internet
C)local area network (LAN)
D.  metropolitan area network (MAN)

Question 72

_________, such as those used by the conventional telephone system, represent data with continuous waves.

A)Analog signals
B)Digital signals
C)Ordinal signals
D)Cardinal signals

Question 73

When using serial transmission, there are three possible techniques for organizing the bits being transferred. Name and describe them.

Question 74

A(n) _________ is a device on a wireless network used to grant network access to wireless devices.

A)wireless access point
B)wireless access organizer
C)network access adapter
D)network access switch

Question 75

The _________, embedded instructions, for a router impact its performance and capabilities.

A)firmware
B)control layout
C)database
D)firewall